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From: Jeff Garland (jeff_at_[hidden])
Date: 2007-01-10 16:41:55

Graham Bennett wrote:
> On Wed, Jan 10, 2007 at 08:19:57AM -0700, Jeff Garland wrote:
>> Graham Bennett wrote:
>>> Hi,
>>> I'm trying to evaluate whether some applications which use Boost are
>>> exposed to problems with the change to the start and end dates of
>>> Daylight Saving Time in the US this year
>>> (
>>> >From an initial inspection, it seems there are at least two areas which
>>> may cause incorrect behaviour after the change is made:
>>> - There is a deprecated template class boost::date_time::us_dst_rules
>>> ( which hard-codes
>>> the rules for US DST changes. Admittedly this class is deprecated, but
>>> it remains in the code base.
>> True -- it should be updated as I know there are some users.
> Ok, I'll have a go at making a patch.

Great, thx!

>>> - Boost ships with a database of timezone and DST information in CSV
>>> format. This appears to contain the old dates for the DST changeover
>>> as reported here
>>> Does the above seem right? Also, have these problems been fixed in the
>>> upcoming 1.34 release? From a quick scan of CVS it seems not.
>> Nope, see other recent post on this topic.
>>> I'd also be grateful if people could comment on any other areas within
>>> Boost that could be problematic, if any.
>>> Lastly I wonder if it's worth perhaps summarising this on the Boost site
>>> somewhere so that it's easier for others to find the information.
>> It should probably go in the date-time docs and the 1.34 release notes -- care
>> to write a summary blurb?
> I'll try to send this along with the patch.

Ditto -- although just a text writeup will probably do as I'll integrate it
with the docs.


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